This document analyzes the initial base year (2016) model output for the TRMG2 against the TRMv6.2. Note: The TRMG2 2016 base year will be updated to the 2020 upon delivery. Additionally, the TRMG2 model includes the expansion into Alamance and Johnston Counties, hence county level totals may deviate from totals in TRMv6.2. Overall, VMT and total trips are nearly identical. Summaries by VMT, volume and facility type are found below.

Volume - Total Daily Flow

MPO

TRMv6.2 Total Volume by MPO
MPO_Tag Total_Volume Total_Counts Count PctDiff
CAMPO 31804488 33161360 2322 -0.0426629
DCHC 15768182 16117220 1140 -0.0221356
None 4956044 4885010 918 0.0143327
Total 52528714 54163590 4380 -0.0311235
TRMG2 Total Volume by MPO
MPO_Tag Total_Volume Total_Counts Count PctDiff
CAMPO 33974991 33307230 2367 0.0196545
DCHC 16686192 16299307 1166 0.0231860
None 5455538 5949920 1047 -0.0906203
Total 56116721 55556457 4580 0.0099839

County

TRMv6.2 Total Volume by County
COUNTY Total_Volume Total_Counts Count PctDiff
alamance 0.0 0 0 NaN
chatham 845870.5 800100 142 0.0541105
durham 12016012.0 12616470 809 -0.0499715
franklin 979763.4 1091880 225 -0.1144323
granville 674119.0 673990 138 0.0001914
harnett 728257.7 593780 144 0.1846567
johnston 3509072.8 3440690 440 0.0194874
nash 124308.5 110000 29 0.1151050
orange 4007723.6 3709140 421 0.0745020
person 644518.2 820930 186 -0.2737112
wake 28884130.1 30195530 1808 -0.0454021
Total 52413775.8 54052510 4342 -0.0312653
TRMG2 Total Volume by County
County Total_Volume Total_Counts Count PctDiff
alamance 875218.15 918000 61 -0.0488814
chatham 912262.99 830880 145 0.0892100
durham 12969703.99 12761537 828 0.0160503
franklin 1020690.38 1052190 221 -0.0308611
granville 628106.70 702670 134 -0.1187112
harnett 652223.98 585480 140 0.1023329
johnston 3436414.09 3686610 505 -0.0728073
nash 66200.31 58670 30 0.1137504
orange 3925944.75 3705250 447 0.0562144
person 527404.48 825020 191 -0.5643022
wake 31020631.33 30336900 1846 0.0220412
Total 56034801.14 55463207 4548 0.0102007

FC_Group

TRMv6.2 Total Volume by Facility
FCGROUP_Tag Total_Volume Total_Counts Count PctDiff
Local 4735796 4655830 1130 0.0168854
Collector 6441994 6623550 1084 -0.0281832
Minor Arterial 13151478 13397660 1015 -0.0187189
Major Arterial 13835061 15284820 763 -0.1047888
Freeway 14257957 14084500 349 0.0121656
Total 52422286 54046360 4341 -0.0309806
TRMG2 Total Volume by Facility
HCMType Total_Volume Total_Counts Count PctDiff
TLHighway 814139.5 716100 79 0.1204210
Local 1217696.3 1164780 453 0.0434561
MajorCollector 1300728.7 1364260 274 -0.0488428
MLHighway 2394673.5 2297000 115 0.0407878
Collector 2644544.0 2879440 820 -0.0888229
Arterial 13139758.1 13604123 1601 -0.0353404
Freeway 14787505.0 14060257 359 0.0491799
MajorArterial 19678396.5 19331197 876 0.0176437
Total 55977441.5 55417157 4577 0.0100091

Cutline/Screenlines

TRMG2 Screenlines:

TRMv6.2 Total Volume by Screenline
SL_Tag Total_Volume Total_Counts Count PctDiff
I-40 1366435.5 1364840 76 0.0011676
I-85 373408.4 397900 37 -0.0655894
Wake/Durham County Line 623487.9 660500 34 -0.0593629
TRMv6.2 Total Volume by Cutline
Cut_Line Cutline Total_Volume Total_Counts Count PctDiff
Southwest Durham 1 218687.56 208500 9 0.0465850
Downtown Durham Loop 2 502879.52 548200 40 -0.0901219
Johnston County 4 315294.98 290390 31 0.0789895
Chatham County 5 42745.66 40600 5 0.0501960
North Raleigh 7 723814.37 744890 38 -0.0291175
Eastern Wake 8 466298.95 514800 37 -0.1040128
US-1 South 9 253017.13 257800 15 -0.0189033
North Wake 11 265991.52 249600 21 0.0616242
Along US 70 12 190236.92 227800 8 -0.1974542
Along I440E and W of I-40 13 388798.87 409900 13 -0.0542726
Chatham/Wake Line 14 63151.99 60370 9 0.0440524
Wake/Harnett Line 15 68517.06 54400 12 0.2060371
US 64 East 16 43101.54 36400 9 0.1554827
Durham/Orange Line 17 356132.96 328880 23 0.0765247
TRMG2 Total Volume by Screenline and Cutline
Screen_Line ScreenlineNum Total_Volume Total_Counts Count PctDiff Type
Wake/Harnett Line 1 87572.97 74580 22 0.1483673 Screen
Wake/Johnston Line 2 292293.58 244950 32 0.1619727 Screen
Wake/Franklin 3 114286.73 106250 21 0.0703208 Cut
Wake/Durham 4 389170.25 393300 29 -0.0106117 Cut
Southern Durham/Chatham 5 61967.55 50400 6 0.1866711 Cut
Durham/Orange 6 375870.26 327600 25 0.1284227 Screen
Durham + Orange/Person 7 21941.43 23770 7 -0.0833389 Cut
Durham/Granville 8 63843.34 55500 4 0.1306846 Cut
Downtown Durham Loop 9 519814.68 518300 39 0.0029139 Cut
I-40 10 1430275.89 1374840 76 0.0387589 Cut
I-85 11 337677.77 367600 35 -0.0886118 Cut

VMT

MPO

TRMv6.2 Total VMT by MPO
MPO_Tag Total_VMT
CAMPO 20215737
DCHC 6963718
None 4545159
Total 31724613
TRMG2 Total VMT by MPO
MPO_Tag Total_VMT
CAMPO 36385516
DCHC 14649340
None 8731138
Total 59765995

County

TRMv6.2 Total Volume by County
COUNTY Total_VMT
alamance 0.00
chatham 1199129.35
durham 4624497.74
franklin 1386899.91
granville 778593.59
harnett 1062841.60
johnston 3114046.71
nash 77695.71
orange 2367945.00
person 726642.31
wake 16232370.88
Total 31570662.79
TRMG2 Total Volume by County
County Total_VMT
alamance 993303.3
chatham 1908876.6
durham 9896837.6
franklin 1562436.3
granville 1176954.3
harnett 1001411.4
johnston 5819437.0
nash 199840.0
orange 5146945.8
person 592546.6
wake 31202620.1
Total 59501209.1

FC_Group

TRMv6.2 Total Volume by Facility
FCGROUP_Tag Total_VMT
Freeway 0
Local 2172837
Collector 2896243
Major Arterial 2968231
Minor Arterial 3624656
Total 11661968
TRMG2 Total Volume by Facility
HCMType Total_VMT
Local 300293.9
TLHighway 329356.1
MajorCollector 330398.4
Collector 637499.6
MLHighway 980543.6
Arterial 2731105.3
MajorArterial 3177635.9
Freeway 11396671.1
Total 19883504.0

Volume Group

TBD

Transit

TRMv6.2 Total Transit Ridership by TOD
OPERATOR Total_OP Total_PK Total
CAT 9899.0531 13954.4857 23853.5388
CHT 13394.6948 16401.7934 29796.4883
CTRAN 1189.5224 1407.4559 2596.9783
DATA 11359.4352 11927.1762 23286.6113
Duke 3715.8149 4301.9723 8017.7872
NCSU 7252.3925 4621.1928 11873.5852
OPT 325.1405 251.0703 576.2108
TTA 2793.9636 14240.5786 17034.5422
TRMG2 Total Transit Ridership by TOD
Agency AM MD PM NT Total
Chapel Hill Transit 6316.585946 5778.59395 8539.814055 5899.50712 26534.501080
Chatham Transit 2.209048 0.00000 1.573097 0.00000 3.782145
Duke 2878.575769 2577.41527 3505.813238 2674.82429 11636.628570
GoCary 394.533364 652.47471 631.363632 627.44636 2305.818063
GoDurham 3353.605610 7191.61067 5607.917597 6150.10307 22303.236948
GoRaleigh 4432.955456 7506.93100 7744.810579 6272.74533 25957.442371
GoRaleigh/GoTriangle 137.381167 0.00000 247.138422 0.00000 384.519589
GoTriangle 4589.713367 2654.05478 7258.499514 2264.16985 16766.437513
NCSU Wolfline 3410.702171 3456.39717 3808.595557 3841.87703 14517.571935
Orange County Public Transit 24.042385 30.09061 8.247979 33.30049 95.681463